Push-button switch.



G. A GLARK. .PUSH BUTToN SWITCH. .QPLICATION FILED NO V. 23, 1909.

1,033,152.l PatentedvJuly 23,1912.

WIr/158858; 2 9

o. A. CLARK. PUSH BUTTON SWITCH. y APPLICATION TILE-D HOY. 23, 1909.

1-QO33,2152. Y manned July 23;'1912.

'2 SHEETS-SHEET 2.

' UNrrED sTATEs PATENT OFFICE. f

CHARLES A. CLARK, OF HARTFORD, CONNECTICUT, ASSIGNR T TBUMBULL ELEC- i TRIC MANUFACTURING COMPANY, 0F ILAINVILLE, CONNECTICUT, A CORPORA- TION 0F CONNECTICUT. i 1

,I PUSHfBITTTON SWITCH.

1,033,152,v l specimen a: mars ment., Patented July 23, 1912,

Appiicatio'n med November 2s, 1909. serial No. 529,541.

T0 all whom it may concern; is a plan View of the plate illustrated at-` 5f,

Be it known that I, CHARLES Per-CLARK, a showin'g the stamping from which said plate citizen of the United States, and a resident is formed. of Hartford, in the county. of Hartford and In the accompanying drawings, the nu- 55 5 State of Connecticut, have invented certain meral 1, denotes a'receptacle of suitable innew and useful Improvements 'in Pushsulating material ,within which'the' several Button Switches, ofwhich the following is parts are mounted.' Secured within said reafull,'clear, and exact description, whereby ceptacle. is a switch plate or support 2, f any one skilled in-tc art may make and use which, as illustratedin Fig. 6 and 5, Fi 5, 60 10 the same. of the drawings, is stamped out of. s eet The invention relates to electric switches metal and struck u to form the support 'for and more particularly switches of the type the various mova le parts -of the switch known as push button switches, wherein a mechanism. Suitably mounted inthe re movable contact. bar actuated by a pair of ceptacle are stationary contacts 3, 3", which 65' ush buttons makes and breaks the circuit are provided with suitable'connections and hetween stationar contact members, the form the terminals of the circuit to he conwhole mechanism'lieing arranged in a suittrolled by the switch. At one side of the abbi-aceptada, 'supporting plate 2, is arranged a. switch bar The ob3ect of the invention is to simplify, 4, suitably secured to a locking plate 5, 70

as far as ossible, the mechanism of such a' through insulating bushings 6. This plate device an condense it in size to the smallestA 5, has a member 7, projecting over the upper limits commensurate with proper operation edge of the supporting late 2, and is .se-- of the parts and control of the circuit. cured to a .spindle S, which'passes through A still further object is toelimi'nate the aspindle opening 9, arranged adjacent to 75 complicated locking mechanisms employedV the upper edge of tlie plate 2. At the lower in various types offp'ush button switches for 'sidei'of the locking plate 5, is an inturned .locking and releasing the switch bar. 'lug 10, which cooperates with a latch or y A still further object is to provide a detrigger as hereinafter described.

vice in which the various parts may be most O n the opposite side of the supporting 50 ch'ea ly and economically formed of sheet plate 2, from that occupid by the locking' meta by stamping or pressing them to form. plate 5, and its contact bar 4, is an actuating 'Referring to the drawings z-Figure 1 is a` plate 11, provided with a central 'tubular detail sectional view through a receptacle, bearing 12, adapted tocngage the stud 8,

illustrating the switch mechanism. Fig. 2 is where it projects through the plateQ'. The 85 a plan view of the mechanism shown in Fig. several parts are held in place by a washer 1. Fig. 3 is a'partial sectional view through 13, and nut 14. At'either endof th bar 11 the mechanism alon the 'line of the supare pivotally arranged the push buttons 15, porting spindle. F1 4 is a view of the 1G, a depression of citherone of which rocks parts looking from t e opposite side of the the plate 11, upon its pivot bearing 8. The 90 40 mechanism as illustrated in F' 1. Fig.I 5 'upper edge of the plate 11, has a projecting is a perspective view illustrating the sevlug 17, whichunderlies the lug 7, of the eral arts of the mechanism unassem-bled. locking plate. A coil-spring 1S, having up- In thls ligure, 5 indicates the actuator plate ardly extending arms 19, and 20,' isarwith its push buttons; 5 indicates the conranged upon the tubular bearing 12, with 95 tact plate or bar; '5 illustratesitlie locking its arms 19, and 20, projecting on 4opposite plate ofthe switch bar; 5 illustrates the sides of the two lugs 7, and 17.

' tension spring and washers' appurtenant The plate 2, is of somewhat peculiar con thereto; 5*. illustrates the trig r'o'rstop for struction, being stam d or blanked outof lholding the lockingypla-te witleits pivot and sheet metal and provided at its upper edge 50"spring;l5t illustrates the supporting plate of with an opening 21, formed substantially theseveral parts of themechanism. Fig.` 6

concentric with the pivot opening 9, and" 24C,r to provide a support for a pivotal bearthere is no opportunity for said o ing 25, for` a latel or trigger 26, which is loose. It'is .important thatthel actuating bar normally held, .in raised osition by the 1l, shall -be vfully depressed and the'spring spring '27,l encircling the plvot- 25, and has 18, fully. tensioned before the locking plate itsforward end l28, projecting through slot 5, can be released, as the lower edge of the',

29, in the plate 2,; in position to engage actuating bar 11comes in contact'with the 75, either one side or the other of the lug 10, of trigger 26, only uponnal depression' of the' the locking plate 15.' When the parts are in former. norma-l position',` the two projections 7 and Obviously, various changes might be made 17, are in registering position one with the in -the exact details ofthe construction def.` other, and the lug l0, of the locking plate 5, scribed without departing from the spirit or 8o' rests at one side of- V-the end 28, of the intent of the invention, andthe'devicel is trigger 26, while the projections?, and 17, equally applicable to both single and'double voi" the plates 5, and 11, rest against one of pole switches. v the shoulders 22 or 23. Obviously, with the at I claim as my invention and .desire parts in thislposition, the switch blade 4, is to secure by Letters Patent is 85 securely locked against movement, as the In a push button switch, a supporting 'A plate 5, through its projection 7, andlocking late, an oscillatory' plate'provided with a lug 10,-is firmly held between the latch 26, ocking'luga contact bar movable with the and one ofthe abrupt shoulders of the plate 2.v oscillatory plate, a pivdted actuating plate Upon amovement of the actuating plate movable relatively to the supporting plate, 90 11, by depression of one of the push buta pivoted trigafer mounted at one side of the tons, the projection 17, will be moved' awayT pivot ,about w ichA the actuating plate moves from the projection 7, and bv this moveand extending through the supporting plate ment, the spring 18, will loe fully tensioned, toengage with the locking lu of the actuatowing to the fact that the plate 5, -is still ing plate, the lower edge" o the actuating 95 securely held by the latch 2G. Upon a final p ate being arranved to engage with the movement'of the plate 11, its lower edge will trigger only near the limit of its movement, come intocontact withv the jupper side of in order to disengage it from the said locktlie latch 26, depressing said latch until its ing lug, and a spring for lholding the triggerA end is depressed suiliciently to release the yinposition to engage the locking lug. "100 locking plate 5. Thereupon, said plate will 2. In a push button switch, a supporting be partially rotated with the switch bar 4, plate, an oscillatory locking plate pivotally by a very' rapid movement, until the projecf .mounted therein, and provided with a protion 7, strikes against one of the shoulders jection extendingover the5locling plate, an of the supporting plate. Then the latch 26, actuating plate concentrically mounted with 105 will engage the opposite side of the locking Areference tothe locking plate and having a lug l0, and hold the parts locked in the newprojecting. lug registering "with the lug of position, the plate 5, being hldagainst `thc locking plate, ,shouldersiformed upon the movement by the engagement of its projec supporting plate for limiting the movement tion'7, with the. locking shoulders of the of the locking and actuating plates,atrigger110 'an extremely d lug 7,` lower portion'of the having abrupt shoulders 22, 23, which 4serve as stops for limiting the movement ofthe borne upon the locking plate 5. The

plate is turned upfas at the advantages of a positive lockA for the switch plate 2, and the engagement of the locking It will be observed in this construction that there is no pivoted to the supporting plate and extendmg therethrough, said trigger-adapted to engage and lock the locking. plate on one side of said plate and with a portionadapted to be engaged'by the lower edge of the actuating plate on the opposite side of the supporting plate, a spring acting upon the trigger for moving it into engagementwith the locking plate and means for tensioning the locking plate vwhile it is held by the controlling the release and locking of the contact bar and its plate and that by having the trigger mounted at one side of the supporting plate and passing under thev actuating plate 11 mounted on one side of the plate and extending into position to engage the locking plate mounted upon the oppositeside of the supporting plate 2, that the whole structure may be condensed into comparatively small proportions and yet will form' an ctliectivevdevice, having a very simple mechanism. V y All of the several parts, as illustrated in Figs. 5 and 6 may be pressed up or stamped from sheet'metal, and when '.asse'inliled, give urahle and clicient device,

trigger.

'3. In a push button switch, a support-ing plate having stop shoulders on its upper edge, a pivot opening' adjacent thereto, a locking plate having a pivotpassing therethrough, saidplate provided with a pro'ection extending lbetween 'the locking shoulders pivotally mounted ivot of the locking plate u project ion upon the and provided wit bar. either iniis/open or closed circuit. x relation` with the"term1nals l, and 2, and V i bar to -jar of the supporting plate,van, actuating plate occupying b utvery small space. It ha's'- all' y normally registering with the projecting lug said plate by the-actuating plate, and means of said locking plate, resilient means confor moving said actuating plate. necting said rojections, a trigger pivotally mounted on t e base of the supporting plate CHARLES A CLARK and projecting through said p ate, said trig- Witnesses:

ger adapted to engage the locking plate and FREDERICK L. BENzoN,

adapted to be engaged and released from GEORGE A. CASE.

(Jopie: of th!! patent may be obtained for ve cents elch, by addressing the Commissioner of Patents, Washington, D. C. 

